Online Non-destructive Detection of Jujuble to Classify Infested and Intact Groups Based on NearInfrared Diffuse Reflection Spectra Analysis Technique

2016 ◽  
Author(s):  
Zhang Cuixia ◽  
Ma Yue
Keyword(s):  
Diffuse Reflection ◽  
Reflection Spectra ◽  
Spectra Analysis ◽  
Analysis Technique ◽  
Non Destructive

Preparation of Visible-Light-Responsive TiO2-xNx Photocatalyst by a Very Simple Method

2011 ◽  
Vol 383-390 ◽  
pp. 3188-3191
Author(s):  
Han Jie Huang ◽  
Wen Long She ◽  
Ling Wen Yang ◽  
Hai Peng Huang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photoelectron Spectroscopy ◽  
Diffuse Reflection ◽  
Ammonia Solution ◽  
Reflection Spectra ◽  
X Ray Diffraction ◽  
Simple Method ◽  
X Ray ◽  
Light Excitation

A visible-light-responsive TiO2-xNx photocatalyst was prepared by a very simple method. Ammonia solution was used as nitrogen resource in this paper. The TiO2-xNx photocatalyst was characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), UV-Vis diffuse reflection spectra (DRS), and X-ray photoelectron spectroscopy (XPS). The ethylene was selected as a target pollutant under visible light excitation to evaluate the activity of this photocatalyst. The new prepared TiO2-xNx photocatalyst with strong photocatalytic activity under visible light irradiation was demonstrated in the experiment.

Development of Deep Learning Algorithms to Discriminate Giant Cell Tumor of Bone from Adjacent Normal Tissues by Confocal Raman Spectroscopy

The Analyst ◽  
2022 ◽  
Author(s):  
Carol PY Lau ◽  
Wenao Ma ◽  
Kwan Yau Law ◽  
Maribel Lacambra ◽  
Kwok Chuen Wong ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Giant Cell Tumor ◽  
Giant Cell ◽  
Chemical Structure ◽  
Cell Tumor ◽  
Confocal Raman Spectroscopy ◽  
Normal Tissues ◽  
Analysis Technique ◽  
Destructive Analysis ◽  
Non Destructive

Raman spectroscopy is a non-destructive analysis technique that provides detailed information about the chemical structure of the tumor. Raman spectra of 52 giant cell tumor of bone (GCTB), and 21...

Device for determining the diffuse-reflection spectra of various kinds of wood

2007 ◽  
Vol 74 (5) ◽  
pp. 351
Author(s):  
V. A. Anchukov ◽  
Yu. V. Ilyasov ◽  
G. G. Gorbunov ◽  
S. S. Gulidov ◽  
A. P. Lappo ◽  
...  
Keyword(s):  
Diffuse Reflection ◽  
Reflection Spectra

scholarly journals FT-NIR Analysis of Intact Table Grape Berries to Understand Consumer Preference Driving Factors

Foods ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 98 ◽  
Author(s):  
Teodora Basile ◽  
Antonio Domenico Marsico ◽  
Maria Francesca Cardone ◽  
Donato Antonacci ◽  
Rocco Perniola
Keyword(s):  
Chemical Composition ◽  
Sensory Analysis ◽  
Near Infrared ◽  
Consumer Preference ◽  
Grape Berries ◽  
Sensory Data ◽  
Analysis Technique ◽  
Statistical Analysis Technique ◽  
Non Destructive ◽  
Maturity Parameters

Fourier-transform near infrared spectroscopy (FT-NIR) is a technique used in the compositional and sensory analysis of foodstuffs. In this work, we have measured the main maturity parameters for grape (sugars and acids) using hundreds of intact berry samples to build models for the prediction of these parameters from berries of two very different varieties: “Victoria” and “Autumn Royal”. Together with the chemical composition in terms of sugar and acidic content, we have carried out a sensory analysis on single berries. Employing the models built for sugars and acids it was possible to learn the sweetness and acidity of each berry before the destructive sensory analysis. The direct correlation of sensory data with FT-NIR spectra is difficult; therefore, spectral data were exported from the spectrometer built-in software and analyzed with R software using a statistical analysis technique (Spearman correlation) which allowed the correlation of berry appreciation data with specific wavelengths that were then related to sugar and acidic content. In this article, we show how it is possible to carry out the analysis of single berries to obtain data on chemical composition parameters and consumer appreciation with a fast, simple, and non-destructive technique with a clear advantage for producers and consumers.

Effects of Sample Dilution and Particle Size/Morphology on Diffuse Reflection Spectra of Carbohydrate Systems in the Near- and Mid-Infrared. Part II: Durum Wheat

1993 ◽  
Vol 47 (6) ◽  
pp. 695-701 ◽  
Author(s):  
Jill M. Olinger ◽  
Peter R. Griffiths
Keyword(s):  
Particle Size ◽  
Durum Wheat ◽  
Near Infrared ◽  
Diffuse Reflection ◽  
Specular Reflection ◽  
Analytical Data ◽  
Reflection Spectra ◽  
Depth Of Penetration ◽  
Mid Infrared ◽  
Effective Depth

It is shown that reduction of particle size for ground durum wheat does not cause a concomitant decrease in the amount of specular reflection observed in the mid-infrared spectrum of the neat sample. Specular reflection can be reduced, but not completely eliminated, by dilution of the wheat in a nonabsorbing matrix such as KCl. The lack of dependence of mid-infrared diffuse reflection spectra of neat ground durum wheat on particle size is explained by the morphology of the surface of each particle and the low effective depth of penetration of mid-infrared radiation into particles of very high absorptivity. It is concluded that mid-infrared diffuse reflection spectra of wheats do not provide information characteristic of the overall composition of the wheat when the particle size exceeds a few micrometers, but that near-infrared diffuse reflection spectra will provide representative analytical data even when the particle size is large.

Infrared Spectroscopy of Surface Films and Powders Using a Metal Light Pipe (Experimental)

1987 ◽  
Vol 41 (4) ◽  
pp. 562-566 ◽  
Author(s):  
Wilford N. Hansen ◽  
James F. Andrew ◽  
Galen J. Hansen
Keyword(s):  
Diffuse Reflection ◽  
High Sensitivity ◽  
Companion Paper ◽  
Thin Layers ◽  
Surface Films ◽  
Reflection Spectra ◽  
Reaction Cell ◽  
Light Pipe ◽  
Inner Surface ◽  
Adsorbed Layers

Light pipe infrared spectra of adsorbed layers and powders are shown. They are compared with specular external reflection, ATR, KBr pellet transmission, and diffuse reflection spectra. The resultant light pipe spectra are found to obey the predictions of the theory presented in the previous companion paper [Appl. Spectrosc. 41, 46–62 (1987)], including the high sensitivity and S/N predicted to be attainable. They are easy to obtain and to interpret. Only fractions of a milligram of sample are required in favorable cases. The light pipe is convenient as a reaction cell, allowing changing spectra to be followed in real time. In the previous paper were presented equations for absorption spectra of thin layers of material on the inner surface of a light pipe, in the infrared. In the present paper the equations are tested against experimental reality. These tests are a crucial verification of the theory.

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